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3951-3959 17Th St

Eureka Valley/Dolores Heights, SF 94114 3582077A 28 units · 4 fl · 1910

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Eureka Valley/Dolores Heights
Above average
avg 1.3
16
FewerMore

This building has 16 novs (7y), above the Eureka Valley/Dolores Heights average of 1.3.

Rent & eviction protection

Is 3951-3959 17Th St rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1910
2 or more units
28 units
Property type
Multi-Family Residential
Zoning
RH3
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units28
Floors4
Year built1910
Total area19,080 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3582077A
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Owner name
Tan Teh-Sen & Nancy Family
Mailing address
Gaetani Real Estate Inc 4444 Geary Blvd Ste 100 San Francisco CA 94118
Last sale
100918

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

3959 17th St, San Francisco, CA 94114
3955 17th St, San Francisco, CA 94114
3951 17th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The 28-unit, 4-story apartment building at 3951-3959 17th Street, owned by Tan Teh-sen & Nancy Family, was constructed in 1910 and is classified as a Multi-Family Residential building. The property has undergone significant improvements and maintenance work over the past decade, including mandatory seismic retrofitting completed in 2015 as a Tier 2 Soft Story building, multiple unit renovations (notably Units 28 and 7 in 2018 and 2017 respectively), and various plumbing and infrastructure upgrades such as water heater replacements, boiler installation, and sewer line work. Recent maintenance issues have emerged, particularly in 2022-2024, including concerns about on-site management staffing, smoking violations, inconsistent heating, and water damage. The building has experienced recurring fire safety compliance issues, with recent violations in 2023 related to sleeping area requirements, and historical problems with blocked exits, extinguishers, and alarm systems, though many of these have been corrected upon inspection. The property has undergone several exterior and structural improvements, including siding repairs and various plumbing upgrades, though recent complaints indicate ongoing challenges with waste management and building maintenance. Recent street cleaning reports from early 2025 indicate persistent issues with garbage and debris in the vicinity of the building, and there is currently an open graffiti case from December 2024.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 3951-3959 17Th St's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
0th percentile

Out of 1278 buildings in this neighborhood, 1278 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
14%
No DBI
violation
86%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

12-Month severity forecast
No violation 7.6%
Moderate concern 74.2%
Severe concern 18.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

3951-3959 17Th St apartment reviews

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The story over time

3951-3959 17Th St event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2026
311 Request Apr 26
Not offensive
building commercial
311 RequestJan 31
Garbage and debris

See all 22 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3951-3959 17Th St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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